Exhibit 24
                        POWER OF ATTORNEY


     KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned
Directors of Aluminum Company of America (the "Company") hereby
constitute and appoint JAN H. M. HOMMEN, MARY L. AMBROSE, EARNEST
J. EDWARDS and BARBARA S. JEREMIAH, or any of them, their true
and lawful attorneys and agents to do any and all acts and things
and execute any and all instruments which said attorneys and
agents, or any of them, may deem necessary or advisable or may be
required to enable the Company to comply with the Securities Act
of 1934, as amended, and any rules, regulations or requirements
of the Securities and Exchange Commission in respect thereof, in
connection with the registration under said Act of the Company's
Annual Report on Form 10-K for 1993, including specifically, but
without limiting the generality of the foregoing, power and
authority to sign the name of the undersigned Directors of the
Company to the Company's Annual Report on Form 10-K for 1993 to
be filed with the Securities and Exchange Commission and to any
instruments or documents filed as part of or in connection with
any such Form 10-K; and the undersigned hereby ratify and confirm
all that said attorneys and agents, or any of them, shall do or
cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned have subscribed these
presents on the date set opposite their names below.


/s/KENNETH W. DAM                       January 14, 1994
Kenneth W. Dam

/s/JOHN P. DIESEL                       January 14, 1994
John P. Diesel

/s/JUDITH M. GUERON                     January 14, 1994
Judith M. Gueron

/s/JOSEPH T. GORMAN                     March 11, 1994
Joseph T. Gorman

/s/JOHN P. MULRONEY                     January 14, 1994
John P. Mulroney

/s/SIR ARVI PARBO                       January 14, 1994
Sir Arvi Parbo

/s/FORREST N. SHUMWAY                   January 14, 1994
Forrest N. Shumway

/s/FRANKLIN A. THOMAS                   January 14, 1994
Franklin A. Thomas